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SN74AVCAH164245GR Folha de dados(PDF) 9 Page - Texas Instruments |
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SN74AVCAH164245GR Folha de dados(HTML) 9 Page - Texas Instruments |
9 / 15 page SN74AVCAH164245 16BIT DUALSUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3STATE OUTPUTS SCES396A − JULY 2002 − REVISED MAY 2004 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 output description The DOC circuitry is implemented, which, during the transition, initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows typical VOL vs IOL and VOH vs IOH curves to illustrate the output impedance and drive capability of the circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC ) Circuitry Technology and Applications, literature number SCEA009. 136 −128 −144 −160 0.4 0.8 1.2 1.6 2.0 2.4 2.8 170 153 119 102 85 68 51 34 17 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 TA = 25°C Process = Nominal IOL − Output Current − mA VCC = 3.3 V VCC = 2.5 V VCC = 1.8 V TA = 25°C Process = Nominal IOH − Output Current − mA VCC = 3.3 V VCC = 2.5 V VCC = 1.8 V −80 −96 −112 −32 −48 −64 0 −16 Figure 1. Output Voltage vs Output Current |
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